RTK UAV Application Market
In recent years, the drone market can be said to be very hot, and there are countless drone companies. There are also many applications of UAVs, such as agriculture, logistics, security, cruise, surveying and mapping, aerial photography, etc. have been very well used. At the same time, the drone market has also spawned the development of many supporting equipment. The application of RTK on industrial drones is a good example. Its accuracy can be said to be quite perfect, and the positioning accuracy can reach centimeter-level in the fixed solution state. We will not analyze how the RTK system works here. What we mainly talk about here is how to apply this system.
The full name of RTK is called carrier phase differential, and its application depends on the differential signal of the base station. Then calculate the coordinate position of the difference solution on the receiver. The positioning accuracy of the calculated data can reach the centimeter level. Of course, this is the positioning accuracy relative to the base station, because the coordinates obtained by the base station belong to a single-point position, and the single-point position itself has errors.
Once RTK enters the fixed solution, there is a lot of data that can be used, not only the position, but also the height. However, the reliability of RTK data is still very important, because basically the reliability of RTK systems on the market is 99.99%, and the intermediate differential data link is suddenly broken, all of which need to be considered. . Therefore, it is better to use some data in RTK to judge, such as the sign of the fixed solution, the position variance, etc. If you are interested, you can explore it yourself. This also requires a lot of experiments to be obtained.
I will not describe these solutions in detail here. I will only post a few pictures here. There are many functions that can be developed for how to apply them. Here we post two reference solutions, one is based on the ordinary wireless method, which mainly considers strong mobility and simple design, but the disadvantage is that the wireless coverage of the base station is small. There is another solution based on GSM network. This solution has strong applicability, but it is similar to a mobile phone base station. long cycle.
The wireless solution is relatively simple, a base station + a wireless module can be solved.
This is mainly to send the differential data to the server through the network and then distribute it to the mobile station terminal. This is more reliable from a long-term perspective. After all, the base station is saved, and this differential data can also be applied in many occasions. This puts forward requirements for many drone applications, that is, a good network is needed to communicate smoothly, but the future development of comprehensive coverage of the network should not be a problem.
The application of RTK on drones is very important to a certain extent. After all, this is flying in the sky. Once there is a mistake, it will fall down, and the loss will be great. At present, UAVs in many fields require precise positioning. For example, agricultural UAVs require no leakage or heavy spraying when spraying, so this requires RTK systems. There are also many UAV electronic compasses that are easy to use. In case of interference, such as electric cruise, a positioning and directional RTK system can be used.